Side frame for car-trucks.



J. H. BAKER. SIDE FRAME POR GAR TRUCKS. APPLIUATION FILED JULY 15, 1909.

958,462. Patented May 17, 1910.

WITNESSES INVENTOR Mm. Y i WM um...

ENCE.

JAMES H. BAKER, OF PITTSBURG, PENNSYLANIA.

sinn FRAME Fon can-TRUCKS.

Specication of Letters Patent.

Patente-d May 17, 191e.

Application filed Jnly 15, 1909. Serial No. 507,701.

To all whom it may concern: v

Be it known that I, JAMES H. BAKER, of Pittsburg, Allegheny county, Pennsylvania,

' have invented a new and useful Improvemember of improved character; and Aa stillment'in Side Frames for Car-Trucks, of

which the followinvr is a full, clear, and

exact description, reerence being had to the accompanying drawings, forming part of thisfs'pecication, in Which- Figure-1 is a side view partly broken away of a side frame for car trucks embodying my invention; Fig. 2 is an end view of the same; Fig. 3 is a section-on the line III-IH of Fig; l; Fig. 4 is a detail view, showing a modified form of the connection between Ythe tie bar and the journal box; and Figs. 5 and `6 are detail views showing a diti'erent iorm of the lower arch bar or tension member of 'the side frame.

My invention has .relationto side frames -or car trucks and more particularly to side frames ofthe arch barL type, the object. of my invention being to provide a side traine of simple and strong construct-ion.

A further object is to provide a tension further object is to provide for an additional means of connection between the tie bar and the journal boxes. f

The precise nature of my invention will be best understood by reference to the accompanying drawings, in which l. have shown the preferred en'il' odinieiit thereof, and which will now be described, it being premised, however, that vai-ions changes may be made in the details of construction and arrangement of the parts-by those skilled in the art, without departing from the spirit and scope of my invention.

In these drawings, the numeral 2 designates the top arch bar or compression .inember of the side frame, havino the bolster guides or columns 3, formed integrally theref with, said bar or member preferably consisting of a single integral Casting.. The bolster guides 3 are connected at the bottom by the integral spring-seating portion si,

which is preferably cored ont,.as indicated its ends to the under side ot' the end poror rivets 8, its end portions being bent horizontally to abut the horizontally extending end portions of the member 2. From these horizontally extending end portions, the tension member extends obliquely downward to the' center of the side frame, where it makes a sharp angular bend, as indicated at 9, the wall of the groove or recess 6 being shaped to 't this bend.

Inv the form shownl in Figs. 1. 2 and 3, the tension member consists of a flat bar whose horizontally bent end portions are prefer# ablyy widened and are somewhat thinner than the other portions of the' member, the

latter -being'of increased depth.

10 designates inwardly extending projections trom the spring-seating portlon 4, said projections being adapted for the attach-v ment of tie bars co'nnecting'tlie opposite side frame to the truck.

l1 designates the tie bar which is split lon-` gitudinally at its central portion and the sides thereoiz spread laterally, as shown at lla in Fig. 3, these spread portions being also bent downwardly and being shaped to tit. the under side of the spring-seating portion 4, at each side 'of' the groove or recess (i. The tiebar is secured to the portion et by bolts 1Q. In order to prevent play of the parts and also to prevent the tie bar from dropping down, should the nuts 123 ofthe journai box bolts 14 drop oit', l, preferably provide the end portions of the tle bar and the bottoms of the journal boxes with intertting dove-tailed projections and recesses.

As shown in Fig. l', the tie bar has a trans-.j verse dovetailed progection 15, which en-' gages a correspondingly shaped recess lt. in the bottom ot' the journal box. struction may, however, be reversed, ,as shown in Fig. 4, the journal box having a dovetailed rib i7, extending transversely across its bottom and the end portion of the soA This rontie bar being shaped to forma correspondy having flattened vend portions 20,-as shown in Figs. 5 and 6. By giving the tension member or lower arch bar a short angular bend at its central portion in the manner shown, the strength of said member is greatly increased, since the strains are carried to tlie.`points of support in straight lines; and the defects which have been found to exist in these members in trucks as heretofore constructed are largely obviated.

It will. be obviousthat many changes may be made in the details of construction and arrangement of the parts; Thus, the compression vmember may be made of various desi s", the tension member may also be of eter. forms in cross section, the end portions of the tension and'compression memj bers may be united in various ways, and

other minor changes may be made.

i I claim:

1. In a side frame for car trucks, a compression member, and a tension 'member secured to the compression member at its end portions above the journal boxes and having a short an lar bend at'its central portion, together with bolster guides or columns acting. as astrut and provided 1with a bearing for thecentral bent portion of thel tension member, said tension member extending obliquely downward in a substantially straight line from the tops of the journal boxes to the' angular bend, substantially as described. j

2. A side frame for car trucks, comprising a. tension member having vintegral bolster guides or columns, connected at the bottom,

.and a spring-seating portion, said springseating portion having a groove or recess on itsunder side, and a tension member secured to the compression member at its ends above the journal boxes and having an angular bend at its central portionfitting the said groove or recess, said tension member extending obliquely downward in a substan= tially straight line from the tops of the journal boxes to the angular bend, substantially asv described.

3.' A side frame for cartrucks having a compression member -formed vwith integral bolster columns or guides, connected at their lower ends -by a spring-seatingportion, said spring-seating portion having a groove or y recess on its under side which extends in an upward direction fromea'ch side of the'cen-v ter, and a tension member having an angular bend at its central portion and seating in said groove or recess,.the end portions of the ltension member being securedto the compression member above the-journal boxes,

f4. In aside frame for car trucks, a cast .its upper ends above the stantially as described. l

ymy hand.

compression member having integral bolster guides or columns integrally connected at itheir lower ends by a spring-seating portion,

said spring-seating portion having its greatest depth at the center, and a tensionmeinber secured to the compression member above the journal boxes and having a central angular bend in which the spring-seating portion bears, substantially as described.

5. In a side Jframe for car trucks, a conipression member having bolster guides or columns connectedA at their lower ends, a tension member having an angular bend at its central portion and provided with a bearing in the bolster guides or colum'ns, and a tie bar forked at its central portion and secured to the connecting portions of the bolster guides or columns at each side of the tension member, substantially as described.

6. In a side frame for car trucks, a compression member having bolster guides or columns connected at their lower ends, the connecting portion for the guides or columns being recessed' on its under side, a tension member bearing in said recess, anda tie barhaving a forked central portion secured to said connecting portion at each side of the tei'ision member, substantially as'described. j

7. In a side frame for car trucks, a tie bar and journal boxes, said journal boxes and tie bar having dovetailed interitting portions, substantially as described.

8. In a side frame for car trucks, the combination of a tie bar and journal boxes, said tie bar and journal boxes having transverse interitting portions, substantially as 1 described.

9. In a side frame for car trucks, a tension member having -a short angular bend'at its central portion and having substantially horizontal end portions arranged to extend above the journal boxes, said tension member extending obliquely downward from the journal boxes in a substantially straight line to the said bend, substantially as described.

10. In a side frame for car trucks, a compression member, and a tension member seycured thereto, said tension member having an angular bend at its central portion at the center of the side frame and extending upwardly from each side ofv said bend to bring.

journal boxes, sub- VIn testimony whereof, I have hereunto set JAMES n. BAKER.

Witnesses:

Gino. II. PARMELEE, Il. M. CoizwiN. 

